Niziurski, Edmund. <br/><br/>
Niewiarygodne przygody Marka Piegusa / 
Edmund Niziurski. 
 - Warszawa :  Nasza Ksiegarnia,  1995. 
 - 205 p. ;  21 cm. 
<br/><br/> A humorous detective adventure story for elementary school children.  Ages 8-12. 
<br/><br/><label>ISBN: </label>831009874X